Spec Clutch SM514 Stage 4 Performance Clutch Kit - Carbon Semi-Metallic Puck Disc

The Spec Clutch SM514 Stage 4 Clutch Kit is a race-grade clutch system engineered for heavily modified engines demanding maximum torque transfer, instantaneous engagement, and reduced rotating mass. As a solid-hub evolution of the Stage 3, the SM514 is purpose-built for competitors who require uncompromising performance on the track.

Key Features:

• Solid 8-rivet hub construction — heat-treated for exceptional strength and long-term durability under high-load racing conditions
• High-clamp pressure plate — delivers aggressive clamping force to handle heavily modified, high-torque powerplants
• Available in 3, 4, or 6-puck carbon semi-metallic friction disc configurations — choose 3-puck for the lightest rotating mass, 6-puck for the smoothest engagement, or 4-puck as an ideal compromise between the two
• Rigid hub and carrier assembly — maximizes power transfer with zero dampening loss, critical for race applications
• Includes release bearing and installation tool kit — everything needed for a complete clutch replacement
• SFI Approved — meets strict safety standards for competition use

Intended Use: Drag Racing, Drift, Road Racing, Rallye, Pulling, Circle Track

Important Note: Due to the rigid hub design, the Stage 4 is a race-only clutch system. It is not street-friendly due to harsh engagement characteristics. Stages 4 and 5 are recommended for race use only. If street/strip dual-purpose use is required, consider the Stage 3 or Stage 3+ instead.